2.2 µH shielded wirewound for DC-DC filter duty
The Murata LQH2HPN2R2MDRL is a 2.2 µH drum-core wirewound inductor in the LQH2 series, built for surface-mount power filtering in compact DC-DC converters and supply-rail decoupling. The 408 mOhm max DCR sets the conduction loss — at full rated current the I²R loss is about 0.27 W, which the 1008 package dissipates without exceeding the 105 °C temperature ceiling in still air.
The shielded ferrite core contains the magnetic field, so this inductor can sit next to a sensitive analog trace or a noisy switching node without coupling flux into adjacent circuits — a real advantage in a dense 2-layer board where ground-plane separation is minimal. A self-resonant frequency of 50 MHz means the inductor behaves inductively up to roughly 10-15 MHz; above that the parasitic capacitance dominates and the impedance rolls off. For a 1-2 MHz switching regulator, that is plenty of headroom.
Package fit and rework reality
No hidden pads, no thermal paddle. A 300 °C hot-air profile with a fine nozzle lifts it clean in about 8 seconds; the ferrite body absorbs heat slowly, so the pads reflow before the core cracks. Orientation is unambiguous — the two terminal bands are clearly visible under a 10× loupe, and the ±20% tolerance marking is laser-etched on the top face. No pin-1 confusion, no tombstoning risk if the pad geometry matches the IPC-7351 footprint.